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Flagentyl 1000mg Tablet

Written By Dr. Anuj Saini, MMST, MBBS
Reviewed By Dr. Rajeev Sharma, MBA, MBBS
Last updated on 17 Dec 2025 | 04:35 PM (IST)
Flagentyl 1000mg Tablet is an antibiotic medicine that helps your body fight infections caused by bacteria and parasites. It is used to treat infections of the liver, stomach, intestines, vagina, brain, heart, lungs, and skin.
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Flagentyl 1000mg Tablet is currently sold out
Same composition alternative:
Secnil Forte Tablet
₹220₹241.13
Available alternative from Abbott
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Flagentyl 1000mg Tablet
Flagentyl 1000mg Tablet
strip of 2 tablets
₹28
₹30.64
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Same composition
Secnil Forte Tablet
Secnil Forte Tablet
strip of 2 tablets
Secnidazole (1000mg)
by Abbott
Get by 8am
₹220
₹93.5 per tablet

₹187

order for
₹1200

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General Information

Contains

Secnidazole (1000mg)

Marketer

Abbott

Storage

Store below 30°C
The content is shown in English
Flagentyl 1000mg Tablet image
Flagentyl 1000mg Tablet image

Product introduction

Flagentyl 1000mg Tablet is also used in the treatment of dental infections, leg ulcers, and pressure sores. You can take this medicine with or without food. The amount you are advised will depend on what you are being treated for and how bad it is, but you should take this antibiotic exactly as prescribed by your doctor.


Your symptoms may improve quickly, but continue taking the medicine for the full course, even if you feel fine. If you stop taking it early, some bacteria may survive, and the infection may come back. Do not drink any alcohol while taking this medicine and for some days after stopping it, as that may cause some side effects.


The most common side effects of this medicine include gastrointestinal disturbances, nausea, abdominal pain, dry mouth, a metallic taste, glossitis, and stomatitis. These side effects are usually mild, but inform your doctor if they persist or cause discomfort. Sucking on sugar-free candies or lozenges may help relieve dry mouth and the metallic taste.


Before using this medicine, inform your doctor if you are allergic to any medicine or have any kidney or liver problems, or any disease of the nervous system. Your doctor may change the dose or prescribe a different medicine. This medicine should not be taken if you are pregnant or breastfeeding unless it is necessary and prescribed by your doctor.

Uses of Flagentyl Tablet

  • Bacterial & parasitic infections

Benefits of Flagentyl Tablet

Bacterial & parasitic infections
Flagentyl 1000mg Tablet helps treat many different infections such as those of the liver, stomach, intestines, vagina, brain, heart, lungs, bones, and skin that are caused by bacteria and parasites. It works by stopping the growth of the bacteria causing the infection. It usually makes you feel better quite quickly. However, you should continue taking it as long as it is prescribed even if you feel better, to make sure that all bacteria and parasites are killed and do not become resistant.

Side effects of Flagentyl Tablet

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them
Common side effects of Flagentyl
  • Nausea
  • Gastrointestinal disturbance
  • Abdominal pain
  • Metallic taste
  • Glossitis (tongue inflammation)
  • Stomatitis (Inflammation of the mouth)

How to use Flagentyl Tablet

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Flagentyl 1000mg Tablet may be taken with or without food.

How Flagentyl Tablet works

Flagentyl 1000mg Tablet is an antibiotic used to treat certain bacterial and parasite infections. It works by damaging the DNA of the infection-causing microorganisms, which stops them from growing and causes them to die.

All substitutes for Flagentyl 1000mg Tablet

For information purposes only. Consult a doctor before taking any medicine.

Secnil Forte Tablet

by Abbott
₹110/tablet
686% costlier
<h3 class=bodySemiBold>Secnil Forte Tablet</h3>

Quick tips

  • Follow the full course of treatment as prescribed by your doctor, even if you start feeling better.
  • Flagentyl 1000mg Tablet may cause side effects such as nausea, stomach discomfort, and a metallic taste in the mouth.
  • Flagentyl 1000mg Tablet used in a high dose or for a prolonged time increases the risk of side effects such as nerve damage. Take it only as prescribed by your doctor.
  • Do not drink alcohol during or for at least 2 days after treatment with this medicine. You may develop nausea, vomiting, flushing, and headache.
  • Inform your doctor if you have liver disease. In cases of severe liver disease, your dosage may require adjustment.

Safety advice

Alcohol

Alcohol

CAUTION
Alcohol should be used with caution while taking Flagentyl 1000mg Tablet.
Pregnancy

Pregnancy

SAFE IF PRESCRIBED
Flagentyl 1000mg Tablet is generally considered safe to use during pregnancy. Animal studies do not indicate harmful effects. However, there are limited human studies.
Breast feeding

Breast feeding

CAUTION
Flagentyl 1000mg Tablet should be used with caution during breastfeeding. Breastfeeding should be held until the treatment of the mother is completed and the drug is eliminated from the body.
Driving

Driving

CONSULT YOUR DOCTOR
It is not known whether Flagentyl 1000mg Tablet alters the ability to drive. Do not drive if you experience any symptoms that affect your ability to concentrate and react. Please consult your doctor.
Kidney

Kidney

CONSULT YOUR DOCTOR
There is limited data available on the use of Flagentyl 1000mg Tablet in patients with kidney disease. Please consult your doctor.
Liver

Liver

CAUTION
Flagentyl 1000mg Tablet should be used with caution in patients with severe liver disease. Dose adjustment may be needed.

Frequently asked questions

Flagentyl 1000mg Tablet works best when taken at the prescribed dose and duration recommended by your doctor. Do not stop taking it even if you see improvement in your condition. If you stop using Flagentyl 1000mg Tablet too early, the symptoms may return or worsen.
If you forget a dose of Flagentyl 1000mg Tablet, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and take the next scheduled dose at the prescribed time. Do not double the dose to make up for the missed one, as this may increase the chances of developing side effects.
Alcohol should be avoided while taking Flagentyl 1000mg Tablet. Moreover, you should avoid alcohol for at least 2 days after finishing the complete course. Drinking alcohol can cause an unpleasant reaction (disulfiram reaction) with symptoms such as stomach pain, nausea, vomiting, headache, flushing, or redness of the face.
Flagentyl 1000mg Tablet is safe if used in the dose and duration advised by your doctor. Take it exactly as directed and do not skip any dose. Follow your doctor's advice closely and inform them if you experience any bothersome side effects.
No, do not stop taking Flagentyl 1000mg Tablet. Complete the full course of treatment even if you feel better. Your symptoms may improve before the infection is completely cured. Hence, if you stop taking the medicine before completing the course, your infection may come back. Consult your doctor before you stop taking Flagentyl 1000mg Tablet and follow their advice.
Flagentyl 1000mg Tablet may cause common side effects such as headaches, nausea, vomiting, diarrhea, stomach pain, and vaginal yeast infection or itching. These side effects are usually not bothersome. But if you are concerned or if any of these persist for a long duration, consult your doctor.

Fact Box

Chemical Class

Nitroimidazole derivative

Habit Forming

No

Therapeutic Class

ANTI INFECTIVES

Action Class

Antiprotozoal & Antibacterial- Nitroimidazoles

References

  1. Secnidazole [Prescribing Information]. Baltimore, MD: Lupin Pharmaceuticals, Inc.; 2022. [Accessed 03 Feb. 2025] (online) Available from:
  2. Secnidazole [Product Information]. Dhaka, Bangladesh: Square Pharmaceuticals Ltd. [Accessed 24 Apr. 2025] (online) Available from:
  3. Central Drugs Standard Control Organisation (CDSCO). [Accessed 29 Mar. 2019] (online) Available from:
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User feedback

Bacterial infections
100%
Excellent
40%
Average
33%
Poor
27%
No Side Effect
40%
Headache
20%
Dryness in mouth
20%
Nausea
20%
With or without food
100%
Average
100%
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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Abbott
Address: 16th Floor, Godrej BKC, Plot – C, “G” Block, Bandra-Kurla Complex, Bandra (East), Mumbai – 400 051, India

Vendor Details

Country of origin: India

Lab tests offered by us

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